1 //===--- DIBuilder.cpp - Debug Information Builder ------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the DIBuilder.
12 //===----------------------------------------------------------------------===//
14 #include "llvm/Analysis/DIBuilder.h"
15 #include "llvm/Analysis/DebugInfo.h"
16 #include "llvm/Constants.h"
17 #include "llvm/IntrinsicInst.h"
18 #include "llvm/Module.h"
19 #include "llvm/ADT/STLExtras.h"
20 #include "llvm/Support/Dwarf.h"
23 using namespace llvm::dwarf;
25 static Constant *GetTagConstant(LLVMContext &VMContext, unsigned Tag) {
26 assert((Tag & LLVMDebugVersionMask) == 0 &&
27 "Tag too large for debug encoding!");
28 return ConstantInt::get(Type::getInt32Ty(VMContext), Tag | LLVMDebugVersion);
31 DIBuilder::DIBuilder(Module &m)
32 : M(m), VMContext(M.getContext()), TheCU(0), DeclareFn(0), ValueFn(0) {}
34 /// CreateCompileUnit - A CompileUnit provides an anchor for all debugging
35 /// information generated during this instance of compilation.
36 void DIBuilder::CreateCompileUnit(unsigned Lang, StringRef Filename,
37 StringRef Directory, StringRef Producer,
38 bool isOptimized, StringRef Flags,
39 unsigned RunTimeVer) {
41 GetTagConstant(VMContext, dwarf::DW_TAG_compile_unit),
42 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
43 ConstantInt::get(Type::getInt32Ty(VMContext), Lang),
44 MDString::get(VMContext, Filename),
45 MDString::get(VMContext, Directory),
46 MDString::get(VMContext, Producer),
47 // Deprecate isMain field.
48 ConstantInt::get(Type::getInt1Ty(VMContext), true), // isMain
49 ConstantInt::get(Type::getInt1Ty(VMContext), isOptimized),
50 MDString::get(VMContext, Flags),
51 ConstantInt::get(Type::getInt32Ty(VMContext), RunTimeVer)
53 TheCU = DICompileUnit(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
56 /// CreateFile - Create a file descriptor to hold debugging information
58 DIFile DIBuilder::CreateFile(StringRef Filename, StringRef Directory) {
59 assert(TheCU && "Unable to create DW_TAG_file_type without CompileUnit");
61 GetTagConstant(VMContext, dwarf::DW_TAG_file_type),
62 MDString::get(VMContext, Filename),
63 MDString::get(VMContext, Directory),
66 return DIFile(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
69 /// CreateEnumerator - Create a single enumerator value.
70 DIEnumerator DIBuilder::CreateEnumerator(StringRef Name, uint64_t Val) {
72 GetTagConstant(VMContext, dwarf::DW_TAG_enumerator),
73 MDString::get(VMContext, Name),
74 ConstantInt::get(Type::getInt64Ty(VMContext), Val)
76 return DIEnumerator(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
79 /// CreateBasicType - Create debugging information entry for a basic
81 DIType DIBuilder::CreateBasicType(StringRef Name, uint64_t SizeInBits,
84 // Basic types are encoded in DIBasicType format. Line number, filename,
85 // offset and flags are always empty here.
87 GetTagConstant(VMContext, dwarf::DW_TAG_base_type),
89 MDString::get(VMContext, Name),
91 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
92 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
93 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
94 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
95 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags;
96 ConstantInt::get(Type::getInt32Ty(VMContext), Encoding)
98 return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
101 /// CreateQaulifiedType - Create debugging information entry for a qualified
102 /// type, e.g. 'const int'.
103 DIType DIBuilder::CreateQualifiedType(unsigned Tag, DIType FromTy) {
104 // Qualified types are encoded in DIDerivedType format.
106 GetTagConstant(VMContext, Tag),
108 MDString::get(VMContext, StringRef()), // Empty name.
110 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
111 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
112 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
113 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
114 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
117 return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
120 /// CreatePointerType - Create debugging information entry for a pointer.
121 DIType DIBuilder::CreatePointerType(DIType PointeeTy, uint64_t SizeInBits,
122 uint64_t AlignInBits, StringRef Name) {
123 // Pointer types are encoded in DIDerivedType format.
125 GetTagConstant(VMContext, dwarf::DW_TAG_pointer_type),
127 MDString::get(VMContext, Name),
129 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
130 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
131 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
132 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
133 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
136 return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
139 /// CreateReferenceType - Create debugging information entry for a reference.
140 DIType DIBuilder::CreateReferenceType(DIType RTy) {
141 // References are encoded in DIDerivedType format.
143 GetTagConstant(VMContext, dwarf::DW_TAG_reference_type),
147 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
148 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
149 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
150 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
151 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
154 return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
157 /// CreateTypedef - Create debugging information entry for a typedef.
158 DIType DIBuilder::CreateTypedef(DIType Ty, StringRef Name, DIFile File,
160 // typedefs are encoded in DIDerivedType format.
161 assert(Ty.Verify() && "Invalid typedef type!");
163 GetTagConstant(VMContext, dwarf::DW_TAG_typedef),
165 MDString::get(VMContext, Name),
167 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
168 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
169 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
170 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
171 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
174 return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
177 /// CreateFriend - Create debugging information entry for a 'friend'.
178 DIType DIBuilder::CreateFriend(DIType Ty, DIType FriendTy) {
179 // typedefs are encoded in DIDerivedType format.
180 assert(Ty.Verify() && "Invalid type!");
181 assert(FriendTy.Verify() && "Invalid friend type!");
183 GetTagConstant(VMContext, dwarf::DW_TAG_friend),
187 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
188 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
189 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
190 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Offset
191 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Flags
194 return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
197 /// CreateInheritance - Create debugging information entry to establish
198 /// inheritnace relationship between two types.
199 DIType DIBuilder::CreateInheritance(DIType Ty, DIType BaseTy,
200 uint64_t BaseOffset, unsigned Flags) {
201 // TAG_inheritance is encoded in DIDerivedType format.
203 GetTagConstant(VMContext, dwarf::DW_TAG_inheritance),
207 ConstantInt::get(Type::getInt32Ty(VMContext), 0), // Line
208 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Size
209 ConstantInt::get(Type::getInt64Ty(VMContext), 0), // Align
210 ConstantInt::get(Type::getInt64Ty(VMContext), BaseOffset),
211 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
214 return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
217 /// CreateMemberType - Create debugging information entry for a member.
218 DIType DIBuilder::CreateMemberType(StringRef Name,
219 DIFile File, unsigned LineNumber,
220 uint64_t SizeInBits, uint64_t AlignInBits,
221 uint64_t OffsetInBits, unsigned Flags,
223 // TAG_member is encoded in DIDerivedType format.
225 GetTagConstant(VMContext, dwarf::DW_TAG_member),
226 File, // Or TheCU ? Ty ?
227 MDString::get(VMContext, Name),
229 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
230 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
231 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
232 ConstantInt::get(Type::getInt64Ty(VMContext), OffsetInBits),
233 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
236 return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
239 /// CreateClassType - Create debugging information entry for a class.
240 DIType DIBuilder::CreateClassType(DIDescriptor Context, StringRef Name,
241 DIFile File, unsigned LineNumber,
242 uint64_t SizeInBits, uint64_t AlignInBits,
243 uint64_t OffsetInBits, unsigned Flags,
244 DIType DerivedFrom, DIArray Elements,
245 MDNode *VTableHoder, MDNode *TemplateParams) {
246 // TAG_class_type is encoded in DICompositeType format.
248 GetTagConstant(VMContext, dwarf::DW_TAG_class_type),
250 MDString::get(VMContext, Name),
252 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
253 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
254 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
255 ConstantInt::get(Type::getInt32Ty(VMContext), OffsetInBits),
256 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
259 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
263 return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
266 /// CreateTemplateTypeParameter - Create debugging information for template
268 DITemplateTypeParameter
269 DIBuilder::CreateTemplateTypeParameter(DIDescriptor Context, StringRef Name,
270 DIType Ty, MDNode *File, unsigned LineNo,
273 GetTagConstant(VMContext, dwarf::DW_TAG_template_type_parameter),
275 MDString::get(VMContext, Name),
278 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
279 ConstantInt::get(Type::getInt32Ty(VMContext), ColumnNo)
281 return DITemplateTypeParameter(MDNode::get(VMContext, &Elts[0],
282 array_lengthof(Elts)));
285 /// CreateStructType - Create debugging information entry for a struct.
286 DIType DIBuilder::CreateStructType(DIDescriptor Context, StringRef Name,
287 DIFile File, unsigned LineNumber,
288 uint64_t SizeInBits, uint64_t AlignInBits,
289 unsigned Flags, DIArray Elements,
290 unsigned RunTimeLang) {
291 // TAG_structure_type is encoded in DICompositeType format.
293 GetTagConstant(VMContext, dwarf::DW_TAG_structure_type),
295 MDString::get(VMContext, Name),
297 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
298 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
299 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
300 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
301 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
302 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
304 ConstantInt::get(Type::getInt32Ty(VMContext), RunTimeLang),
305 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
307 return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
310 /// CreateUnionType - Create debugging information entry for an union.
311 DIType DIBuilder::CreateUnionType(DIDescriptor Scope, StringRef Name,
313 unsigned LineNumber, uint64_t SizeInBits,
314 uint64_t AlignInBits, unsigned Flags,
315 DIArray Elements, unsigned RunTimeLang) {
316 // TAG_union_type is encoded in DICompositeType format.
318 GetTagConstant(VMContext, dwarf::DW_TAG_union_type),
320 MDString::get(VMContext, Name),
322 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
323 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
324 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
325 ConstantInt::get(Type::getInt64Ty(VMContext), 0),
326 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
327 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
329 ConstantInt::get(Type::getInt32Ty(VMContext), RunTimeLang),
330 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
332 return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
335 /// CreateSubroutineType - Create subroutine type.
336 DIType DIBuilder::CreateSubroutineType(DIFile File, DIArray ParameterTypes) {
337 // TAG_subroutine_type is encoded in DICompositeType format.
339 GetTagConstant(VMContext, dwarf::DW_TAG_subroutine_type),
341 MDString::get(VMContext, ""),
343 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
344 ConstantInt::get(Type::getInt64Ty(VMContext), 0),
345 ConstantInt::get(Type::getInt64Ty(VMContext), 0),
346 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
347 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
348 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
350 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
351 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
353 return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
356 /// CreateEnumerationType - Create debugging information entry for an
358 DIType DIBuilder::CreateEnumerationType(DIDescriptor Scope, StringRef Name,
359 DIFile File, unsigned LineNumber,
361 uint64_t AlignInBits, DIArray Elements) {
362 // TAG_enumeration_type is encoded in DICompositeType format.
364 GetTagConstant(VMContext, dwarf::DW_TAG_enumeration_type),
366 MDString::get(VMContext, Name),
368 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
369 ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
370 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
371 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
372 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
373 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
375 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
376 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
378 MDNode *Node = MDNode::get(VMContext, &Elts[0], array_lengthof(Elts));
379 NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.enum");
380 NMD->addOperand(Node);
384 /// CreateArrayType - Create debugging information entry for an array.
385 DIType DIBuilder::CreateArrayType(uint64_t Size, uint64_t AlignInBits,
386 DIType Ty, DIArray Subscripts) {
387 // TAG_array_type is encoded in DICompositeType format.
389 GetTagConstant(VMContext, dwarf::DW_TAG_array_type),
391 MDString::get(VMContext, ""),
393 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
394 ConstantInt::get(Type::getInt64Ty(VMContext), Size),
395 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
396 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
397 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
400 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
401 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
403 return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
406 /// CreateVectorType - Create debugging information entry for a vector.
407 DIType DIBuilder::CreateVectorType(uint64_t Size, uint64_t AlignInBits,
408 DIType Ty, DIArray Subscripts) {
409 // TAG_vector_type is encoded in DICompositeType format.
411 GetTagConstant(VMContext, dwarf::DW_TAG_vector_type),
413 MDString::get(VMContext, ""),
415 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
416 ConstantInt::get(Type::getInt64Ty(VMContext), Size),
417 ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
418 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
419 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
422 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
423 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
425 return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
428 /// CreateArtificialType - Create a new DIType with "artificial" flag set.
429 DIType DIBuilder::CreateArtificialType(DIType Ty) {
430 if (Ty.isArtificial())
433 SmallVector<Value *, 9> Elts;
435 assert (N && "Unexpected input DIType!");
436 for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) {
437 if (Value *V = N->getOperand(i))
440 Elts.push_back(Constant::getNullValue(Type::getInt32Ty(VMContext)));
443 unsigned CurFlags = Ty.getFlags();
444 CurFlags = CurFlags | DIType::FlagArtificial;
446 // Flags are stored at this slot.
447 Elts[8] = ConstantInt::get(Type::getInt32Ty(VMContext), CurFlags);
449 return DIType(MDNode::get(VMContext, Elts.data(), Elts.size()));
452 /// RetainType - Retain DIType in a module even if it is not referenced
453 /// through debug info anchors.
454 void DIBuilder::RetainType(DIType T) {
455 NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.ty");
459 /// CreateUnspecifiedParameter - Create unspeicified type descriptor
460 /// for the subroutine type.
461 DIDescriptor DIBuilder::CreateUnspecifiedParameter() {
463 GetTagConstant(VMContext, dwarf::DW_TAG_unspecified_parameters)
465 return DIDescriptor(MDNode::get(VMContext, &Elts[0], 1));
468 /// CreateTemporaryType - Create a temporary forward-declared type.
469 DIType DIBuilder::CreateTemporaryType() {
470 // Give the temporary MDNode a tag. It doesn't matter what tag we
471 // use here as long as DIType accepts it.
472 Value *Elts[] = { GetTagConstant(VMContext, DW_TAG_base_type) };
473 MDNode *Node = MDNode::getTemporary(VMContext, Elts, array_lengthof(Elts));
477 /// CreateTemporaryType - Create a temporary forward-declared type.
478 DIType DIBuilder::CreateTemporaryType(DIFile F) {
479 // Give the temporary MDNode a tag. It doesn't matter what tag we
480 // use here as long as DIType accepts it.
482 GetTagConstant(VMContext, DW_TAG_base_type),
487 MDNode *Node = MDNode::getTemporary(VMContext, Elts, array_lengthof(Elts));
491 /// GetOrCreateArray - Get a DIArray, create one if required.
492 DIArray DIBuilder::GetOrCreateArray(Value *const *Elements, unsigned NumElements) {
493 if (NumElements == 0) {
494 Value *Null = llvm::Constant::getNullValue(Type::getInt32Ty(VMContext));
495 return DIArray(MDNode::get(VMContext, &Null, 1));
497 return DIArray(MDNode::get(VMContext, Elements, NumElements));
500 /// GetOrCreateSubrange - Create a descriptor for a value range. This
501 /// implicitly uniques the values returned.
502 DISubrange DIBuilder::GetOrCreateSubrange(int64_t Lo, int64_t Hi) {
504 GetTagConstant(VMContext, dwarf::DW_TAG_subrange_type),
505 ConstantInt::get(Type::getInt64Ty(VMContext), Lo),
506 ConstantInt::get(Type::getInt64Ty(VMContext), Hi)
509 return DISubrange(MDNode::get(VMContext, &Elts[0], 3));
512 /// CreateGlobalVariable - Create a new descriptor for the specified global.
513 DIGlobalVariable DIBuilder::
514 CreateGlobalVariable(StringRef Name, DIFile F, unsigned LineNumber,
515 DIType Ty, bool isLocalToUnit, llvm::Value *Val) {
517 GetTagConstant(VMContext, dwarf::DW_TAG_variable),
518 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
520 MDString::get(VMContext, Name),
521 MDString::get(VMContext, Name),
522 MDString::get(VMContext, Name),
524 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
526 ConstantInt::get(Type::getInt32Ty(VMContext), isLocalToUnit),
527 ConstantInt::get(Type::getInt32Ty(VMContext), 1), /* isDefinition*/
530 MDNode *Node = MDNode::get(VMContext, &Elts[0], array_lengthof(Elts));
531 // Create a named metadata so that we do not lose this mdnode.
532 NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.gv");
533 NMD->addOperand(Node);
534 return DIGlobalVariable(Node);
537 /// CreateStaticVariable - Create a new descriptor for the specified static
539 DIGlobalVariable DIBuilder::
540 CreateStaticVariable(DIDescriptor Context, StringRef Name,
541 StringRef LinkageName, DIFile F, unsigned LineNumber,
542 DIType Ty, bool isLocalToUnit, llvm::Value *Val) {
544 GetTagConstant(VMContext, dwarf::DW_TAG_variable),
545 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
547 MDString::get(VMContext, Name),
548 MDString::get(VMContext, Name),
549 MDString::get(VMContext, LinkageName),
551 ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
553 ConstantInt::get(Type::getInt32Ty(VMContext), isLocalToUnit),
554 ConstantInt::get(Type::getInt32Ty(VMContext), 1), /* isDefinition*/
557 MDNode *Node = MDNode::get(VMContext, &Elts[0], array_lengthof(Elts));
558 // Create a named metadata so that we do not lose this mdnode.
559 NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.gv");
560 NMD->addOperand(Node);
561 return DIGlobalVariable(Node);
564 /// CreateVariable - Create a new descriptor for the specified variable.
565 DIVariable DIBuilder::CreateLocalVariable(unsigned Tag, DIDescriptor Scope,
566 StringRef Name, DIFile File,
567 unsigned LineNo, DIType Ty,
568 bool AlwaysPreserve, unsigned Flags) {
570 GetTagConstant(VMContext, Tag),
572 MDString::get(VMContext, Name),
574 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
576 ConstantInt::get(Type::getInt32Ty(VMContext), Flags)
578 MDNode *Node = MDNode::get(VMContext, &Elts[0], array_lengthof(Elts));
579 if (AlwaysPreserve) {
580 // The optimizer may remove local variable. If there is an interest
581 // to preserve variable info in such situation then stash it in a
583 DISubprogram Fn(getDISubprogram(Scope));
584 StringRef FName = "fn";
585 if (Fn.getFunction())
586 FName = Fn.getFunction()->getName();
588 if (FName.startswith(StringRef(&One, 1)))
589 FName = FName.substr(1);
590 NamedMDNode *FnLocals = getOrInsertFnSpecificMDNode(M, FName);
591 FnLocals->addOperand(Node);
593 return DIVariable(Node);
596 /// CreateComplexVariable - Create a new descriptor for the specified variable
597 /// which has a complex address expression for its address.
598 DIVariable DIBuilder::CreateComplexVariable(unsigned Tag, DIDescriptor Scope,
599 StringRef Name, DIFile F,
601 DIType Ty, Value *const *Addr,
603 SmallVector<Value *, 15> Elts;
604 Elts.push_back(GetTagConstant(VMContext, Tag));
605 Elts.push_back(Scope);
606 Elts.push_back(MDString::get(VMContext, Name));
608 Elts.push_back(ConstantInt::get(Type::getInt32Ty(VMContext), LineNo));
610 Elts.append(Addr, Addr+NumAddr);
612 return DIVariable(MDNode::get(VMContext, Elts.data(), Elts.size()));
615 /// CreateFunction - Create a new descriptor for the specified function.
616 DISubprogram DIBuilder::CreateFunction(DIDescriptor Context,
618 StringRef LinkageName,
619 DIFile File, unsigned LineNo,
621 bool isLocalToUnit, bool isDefinition,
622 unsigned Flags, bool isOptimized,
626 GetTagConstant(VMContext, dwarf::DW_TAG_subprogram),
627 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
629 MDString::get(VMContext, Name),
630 MDString::get(VMContext, Name),
631 MDString::get(VMContext, LinkageName),
633 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
635 ConstantInt::get(Type::getInt1Ty(VMContext), isLocalToUnit),
636 ConstantInt::get(Type::getInt1Ty(VMContext), isDefinition),
637 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
638 ConstantInt::get(Type::getInt32Ty(VMContext), 0),
639 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
640 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
641 ConstantInt::get(Type::getInt1Ty(VMContext), isOptimized),
644 MDNode *Node = MDNode::get(VMContext, &Elts[0], array_lengthof(Elts));
646 // Create a named metadata so that we do not lose this mdnode.
647 NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.sp");
648 NMD->addOperand(Node);
649 return DISubprogram(Node);
652 /// CreateMethod - Create a new descriptor for the specified C++ method.
653 DISubprogram DIBuilder::CreateMethod(DIDescriptor Context,
655 StringRef LinkageName,
657 unsigned LineNo, DIType Ty,
660 unsigned VK, unsigned VIndex,
661 MDNode *VTableHolder,
666 GetTagConstant(VMContext, dwarf::DW_TAG_subprogram),
667 llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
669 MDString::get(VMContext, Name),
670 MDString::get(VMContext, Name),
671 MDString::get(VMContext, LinkageName),
673 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
675 ConstantInt::get(Type::getInt1Ty(VMContext), isLocalToUnit),
676 ConstantInt::get(Type::getInt1Ty(VMContext), isDefinition),
677 ConstantInt::get(Type::getInt32Ty(VMContext), (unsigned)VK),
678 ConstantInt::get(Type::getInt32Ty(VMContext), VIndex),
680 ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
681 ConstantInt::get(Type::getInt1Ty(VMContext), isOptimized),
684 MDNode *Node = MDNode::get(VMContext, &Elts[0], array_lengthof(Elts));
686 // Create a named metadata so that we do not lose this mdnode.
687 NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.sp");
688 NMD->addOperand(Node);
689 return DISubprogram(Node);
692 /// CreateNameSpace - This creates new descriptor for a namespace
693 /// with the specified parent scope.
694 DINameSpace DIBuilder::CreateNameSpace(DIDescriptor Scope, StringRef Name,
695 DIFile File, unsigned LineNo) {
697 GetTagConstant(VMContext, dwarf::DW_TAG_namespace),
699 MDString::get(VMContext, Name),
701 ConstantInt::get(Type::getInt32Ty(VMContext), LineNo)
703 return DINameSpace(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
706 DILexicalBlock DIBuilder::CreateLexicalBlock(DIDescriptor Scope, DIFile File,
707 unsigned Line, unsigned Col) {
708 // Defeat MDNode uniqing for lexical blocks by using unique id.
709 static unsigned int unique_id = 0;
711 GetTagConstant(VMContext, dwarf::DW_TAG_lexical_block),
713 ConstantInt::get(Type::getInt32Ty(VMContext), Line),
714 ConstantInt::get(Type::getInt32Ty(VMContext), Col),
716 ConstantInt::get(Type::getInt32Ty(VMContext), unique_id++)
718 return DILexicalBlock(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
721 /// InsertDeclare - Insert a new llvm.dbg.declare intrinsic call.
722 Instruction *DIBuilder::InsertDeclare(Value *Storage, DIVariable VarInfo,
723 Instruction *InsertBefore) {
724 assert(Storage && "no storage passed to dbg.declare");
725 assert(VarInfo.Verify() && "empty DIVariable passed to dbg.declare");
727 DeclareFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_declare);
729 Value *Args[] = { MDNode::get(Storage->getContext(), &Storage, 1), VarInfo };
730 return CallInst::Create(DeclareFn, Args, Args+2, "", InsertBefore);
733 /// InsertDeclare - Insert a new llvm.dbg.declare intrinsic call.
734 Instruction *DIBuilder::InsertDeclare(Value *Storage, DIVariable VarInfo,
735 BasicBlock *InsertAtEnd) {
736 assert(Storage && "no storage passed to dbg.declare");
737 assert(VarInfo.Verify() && "invalid DIVariable passed to dbg.declare");
739 DeclareFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_declare);
741 Value *Args[] = { MDNode::get(Storage->getContext(), &Storage, 1), VarInfo };
743 // If this block already has a terminator then insert this intrinsic
744 // before the terminator.
745 if (TerminatorInst *T = InsertAtEnd->getTerminator())
746 return CallInst::Create(DeclareFn, Args, Args+2, "", T);
748 return CallInst::Create(DeclareFn, Args, Args+2, "", InsertAtEnd);
751 /// InsertDbgValueIntrinsic - Insert a new llvm.dbg.value intrinsic call.
752 Instruction *DIBuilder::InsertDbgValueIntrinsic(Value *V, uint64_t Offset,
754 Instruction *InsertBefore) {
755 assert(V && "no value passed to dbg.value");
756 assert(VarInfo.Verify() && "invalid DIVariable passed to dbg.value");
758 ValueFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_value);
760 Value *Args[] = { MDNode::get(V->getContext(), &V, 1),
761 ConstantInt::get(Type::getInt64Ty(V->getContext()), Offset),
763 return CallInst::Create(ValueFn, Args, Args+3, "", InsertBefore);
766 /// InsertDbgValueIntrinsic - Insert a new llvm.dbg.value intrinsic call.
767 Instruction *DIBuilder::InsertDbgValueIntrinsic(Value *V, uint64_t Offset,
769 BasicBlock *InsertAtEnd) {
770 assert(V && "no value passed to dbg.value");
771 assert(VarInfo.Verify() && "invalid DIVariable passed to dbg.value");
773 ValueFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_value);
775 Value *Args[] = { MDNode::get(V->getContext(), &V, 1),
776 ConstantInt::get(Type::getInt64Ty(V->getContext()), Offset),
778 return CallInst::Create(ValueFn, Args, Args+3, "", InsertAtEnd);